Final answer:
An Extranet is the technology that allows selected customers and suppliers limited access to a company's private corporate network, differentiating it from a VPN, Intranet, or LAN.
Step-by-step explanation:
The technology that facilitates limited access to private corporate networks is known as a Extranet. An extranet is similar to an intranet, but it's extended to users outside of the company, like customers and suppliers. This is different from a VPN (Virtual Private Network), which allows remote users secure access to the company network, an Intranet, which is a private network accessible only to organization's staff, and a LAN (Local Area Network), which is a network that connects computers within a limited area such as a residence, school, or office building.